Our Providers Our staff is dedicated to providing the best health care service available, for your convenience we’ve included detailed information about their qualifications below. Karen T. Greene, M.D. View Biography View CV Schedule an appointment through Piedmont Healthcare Deanna E. Guthrie, M.D. View Biography View CV Schedule an appointment through Piedmont Healthcare Mironda D. Williams, M.D. View Biography View CV Schedule an appointment through Piedmont Healthcare Mary Corbitt, APRN View Biography View CV Schedule an appointment through Piedmont Healthcare